I’m not a fan of fixed-spool reels for kayak fishing because they take a lot of valuable space and seem less prone to holding up to the rigours of this fishing discipline. I mainly use large lever-drag multipliers for baitfishing; reels holding enough line that I can use in deeper water for tope if required, and can let out enough line to hold bottom in fast, shallow waters when cod fishing.
In areas with a smaller flow, or when trolling and casting, I switch over to baitcasters, which hold far less line but are light, have a low profile and are very easy to use. I use the rod more to handle the fish when using these, of course, as they do not have the power in the drag of the larger reels. I have even used, for fun, miniature multiplier reels and free-running centrepins, but they’re not really the ideal tools for the job.
Lever-drag multipliers for baitfishing (above), and baitcasters for trolling (below)